I might need a bit more information on this one in order to get the right answer to you.
You can however in MapInfo Pro base a thematic on multiple columns by using the Expression dialog when selecting the field. In the Expression dialog, you can combine multiple columns into a single resulting value that you then can base your thematic on.
During the webinar one comment also mentioned bivariate thematics as another option. Read more about this feature here: https://customer.precisely.com/s/article/How-to-create-a-bi-variate-thematic-map-in-MapInfo-Pro?language=en_US
I might not have completely understood what you are looking for so if you don't feel you got a useful answer, please let us know.